Batch sparge mash tun parts

I used the following guide to make a cooler batch sparge mash tun:

https://www.homebrewersassociation.org/how-to-brew/building-a-mash-tun-has-never-been-so-easy/

Instead of the keg bung, I made these printables. Everything else follows the guide.

Cooler used is an Igloo 48QT with 25mm thick walls. 

The hole was drilled using a 1.5" (~38mm) hole drill. 

This makes the thicker section of the passthru ~25x37mm.

Gaskets are printed in TPU, everything else in PETG. I also used food safe RTV to seal everything.